Armstrong's agent, Glenn Schwartzman, announced the
sign-and-trade deal Sunday. The swap, which also included forward
Josh Powell and swingman Rawle Marshall, couldn't be completed
until the NBA office opened Monday.

The 38-year-old Armstrong is a 12-year veteran with career
averages of 10.1 points and 4.4 assists. He spent most of his
career with Orlando before brief stints in New Orleans and Dallas.

Armstrong played much of last season with a torn rotator cuff.
His biggest contribution, though, was as a locker room leader.
Among the players he mentored was Marquis Daniels, who was traded
by Dallas to Indiana for Austin Croshere earlier this month.

"Darrell Armstrong is a good fit, a solid professional, a great
guy in the locker room and someone who brings a lot of energy to a
team," said Larry Bird, Indiana's president of basketball
operations.

Johnson gives the Mavericks a pass-first point guard to
complement starters Jason Terry and Devin Harris, both of whom are
more scorers than distributors. Johnson also is taller than
Armstrong and a strong defender with solid playoff experience.

The 31-year-old Johnson averaged 20 points and 5.2 assists in
six playoff games last season. He'll make around $2.6 million this
season and $2.8 million the following year.

Johnson had been a backup for most of his career, but started 89
regular-season games the past two years while the Pacers fought
through injuries and suspensions. He scored 40 points in his last
game with Indiana, a loss to New Jersey in the first round of the
Eastern Conference playoffs.

Powell and Marshall are both coming off their first NBA season.

Powell played 37 games, starting twice, and saw mop-up duty in
six playoff games. Marshall played 23 games, starting nine, but was
left off the postseason roster.